Viessmann GC1 Installation, Start-Up And Service Instructions

25
5712 717 v1.0
Vitotronic 100, KW10B Installation, Start-up and Service
Pump Priority Sequences
Start-up
Sequence # Condition True
Condition
0 Default (start of sequence) OFF
1 Continuous operation enabled [SW6-3 ON] ON
2 Warm Weather Shut Down in effect:
Summer mode switch enabled and outdoor air temperature > 37
o
F (3
o
C)
or
OAT above WWSD setpoint [S5] for 30 minutes
OFF
3 OpenTherm request boiler pump ON
4 Thermostat call (post purge for 4 minutes if [SW6-2] enabled) ON
5 Delay pump until boiler temperature of at least 131
o
F (55
o
C) [SW6-4 ON] OFF
6 DHW priority enabled [SW7-1] and DHW demand OFF
7 Boiler sensor fault ON
8 Override switch enabled ON
Sequence # Condition True Condition
0
Default (start of sequence) OFF
1 If DHW tank temperature falls below approx. 3.6
o
F (2
o
C) of DHW setpoint ON
2 Delay pump until boiler temperature is approx. 18
o
F (10
o
C) above DHW temperature
[SW7-5]
OFF
3 Disable DHW pump after one hour of continuous DHW pump operation OFF
Boiler pump priority sequence
DHW pump priority sequence
Note: Higher priority overrides the previous setting

Viessmann GC1 Specifications

General

Brand	Viessmann
Model	GC1
Category	Control Unit
Language	English